[mutter] monitor-config: Fix build

[Jasper St. Pierre <jstpierre src gnome org>]

commit 8296d4cdce426a3340b0d28ca462e1dacfc5f37f
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Mon Dec 29 17:14:55 2014 -0800

    monitor-config: Fix build

 src/backends/meta-monitor-config.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/backends/meta-monitor-config.c b/src/backends/meta-monitor-config.c
index 265985f..835caa4 100644
--- a/src/backends/meta-monitor-config.c
+++ b/src/backends/meta-monitor-config.c
@@ -1074,7 +1074,7 @@ find_primary_output (MetaOutput *outputs,
 
   for (i = 0; i < n_outputs; i++)
     {
-      if (output_is_laptop (output))
+      if (output_is_laptop (&outputs[i]))
         return &outputs[i];
     }